For questions about a reservation, both pre- and post-trip, and assistance with site navigation and technical support, Orbitz customer service (24*7) is available at northwestern@orbitzforbusiness.net or 877-672-4891. If the call requires an Orbitz agent to open the reservation (in order to make changes, cancellations, confirm trip details, etc.) a $20 fee will be charged because the online transaction has become an agent-assisted booking. This fee is capped at $20 per ticket.